CVE-2026-45880
In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails When vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap() doesn't invoke percpu_ref_put() to free the…
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails When vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap() doesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired after gen_pool_alloc_owner(), and memunmap_pages() will hang forever when trying to remove the PCI device. Fix it by adding the missed percpu_ref_put().
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 5th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38Patch
- https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3Patch
- https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755fPatch
- https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40Patch
- https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93ePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.